Valve.



V10."75$:),27'. w PATENTED MAY l0, 1904.

W. H. HONSBERGER.

VALVE.

APPLIOATION FILED 1320.23, 1903.

N0 MODEL.

UNITED STATES Patented May 10, 1904.

WILLIAM H. I IONSBERGER, OF BUFFALO, NEW YORK.

VALVE.

SPECIFICATION forming part of Letter.: Patent No. 759,27*?, dated May 10, 1904.

Application filed December 28, 1903. Serial No. 186,317. (No model.)

To all whom, t may concern.-

Be it known that I, WILLIAM H. HoNsnR- GER, ort Buiialo, New York, have invented certain new and useful Improvements in Valves, of which the following is aull, clear, and exact description.

My invention. relates to valves, and more particularly to a valve wherein one inlet is closed and a second passage putin connection with the outlet by pressure supplied through a secondary or emergency inlet.

My invention while of wider utility is especially adaptable to an emergency-air system as applied to air-brakes, and without limiting myself to that particular use I shall describe the same as used in that connection.

Referring' to the drawing' herewith, 1 is the body or casing of the valve.

2 is the main cylindrical boring, and 3 is a float-valve.

4t is a cone-shaped crown to the valve 8, and 5 is a similarly-shaped recess at the top of the cylindrical opening 3 to receive the crown 4: when the valve 3 is forced upward.

6 is the regular air-inlet, and 7 is the airoutlet. The inlet 6 connects with the tank or air-supply, and 7 connects with the brake-cylinder.

8 is an emergency-air inlet, having an enlarged opening 9 through the nut 10.

ll and l2 constitute a by-pass connecting` the main chamber 2 with the outlet 7 when the valve 3 is raised to the point when its face is on the broken line.

I will now describe the operation of my invention. Under ordinary circumstances the air passes from the inlet 6 to the main chamber 2 Vand thence to the outlet 7. In case of an emergency-as, for example, in case of a break in the pipe leading to the inlet 6, or the `failure of the regular air-pressurewthe emergency air is turned on into the opening' 8. This pressure applied to substantially the entire base of the valve 3 in the area 9 forces the valve 3 upward and seats its crown 4 in the space rIhe base oi. the valve 8 is then above the opening 11, and the emergency air passes out through the passages 1l and 12 to the outlet 7 and thence to the brake-cylinder. In this movement of the valve 3 the inlet 6 is closed and held closed so long as air is admitted through the opening 8. When the demand for the emergency air is past and it is desired to use air from the inlet 6, if the valve 3 has not fallen by gravity in the meantime the pressure of the air upon the crown 4 will drive it down and reestablish the connections in the regular manner. The employment of the inlet 6, opening upon the cone-shaped crown, is of great importance. It is not safe to rely upon gravity to rcseat the valve, and positive means must be used to overcome any tendency to stick or bind.

Having thus described my invention and its method of operation as applied to one speciiic use, what I claim isl. A valve comprising a main cylindrical chamber and a reduced end to said chamber, a

cylindrical Heat-valve fitting therein and having a crown to itinto said reduced end, a main inlet connecting with said chamber and opening into said reduced end, an outlet open to said chamber when said valve is in its normal position, a second inlet entering said chamber underneath said valve, and a by-pass from said main chamber to said outlet, closed by said valve when in its normal position and opened when said valve is raised, substantially as and for the purposes set forth.

2. In a valve, a main chamber, a cylindrical float-valve traveling' in said chamber, a main inlet-opening over the crown oi said floatvalve, an auxiliary inlet-opening under said float-valve, a main outlet leading from said main chamber, and a by-pass leading from said main chamber to said main outlet, whereby pressure from the main inlet seats said valve in position to close said by-pass and open said main outlet, and pressure from the auxiliary inlet seats said lioat to close said main inlet and said main outlet and to open said auxiliary inlet and said by-pass, substantially as and for the purposes set forth.

In witness whereof I have hereunto set my hand in the presence of two'witnesses.

WILLIAM H. HONSBERGER.

W itnesses:

Ollas. N. WEBER, S. BROWN. 

